What is silicon nitride membrane window？

Silicon nitride membrane window is a kind of observation window prepared by modern MEMS technology, which has the characteristics of high transparency, high mechanical strength and excellent chemical stability.

First of all, the refractive index of the silicon nitride membrane window is very low, only about 1/3 of the air, so it can reduce reflection loss and increase transmission, thereby improving the efficiency of the optical system. Secondly, silicon nitride membrane window materials have good mechanical strength and can withstand applications in extreme environments such as high pressure, high temperature and strong acids. In addition, because this silicon nitride membrane window uses a low stress silicon nitride (0-250MP) film, it is more robust and durable than metered-type and ST silicon nitride membrane window.

Silicon nitride membrane windows are ideal for use in a wide range of scientific research fields such as transmission imaging and transmission spectroscopy, such as X-ray (transmission imaging/energy spectrum station), TEM, SEM, IR, UV, etc.

In terms of preparation, the silicon nitride membrane window is mainly prepared by thin film deposition technology. In the preparation process, various factors need to be considered, such as film thickness, material quality, surface roughness, etc., to ensure its quality and performance.

In addition, the price of silicon nitride membrane window is relatively high, but its application in the field of scientific research is very wide, so it is still widely used. At the same time, with the continuous development of technology, the preparation process and cost of silicon nitride membrane window are also decreasing, and it is expected to be more widely used in the future.

In short, silicon nitride membrane window is an observation window with excellent performance and a wide range of applications, and its preparation process and cost are constantly improving and reducing, and it is expected to be more widely used in the future.